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arm64: dts: rockchip: convert rk-keys to adc-keys/gpio-keys for rk3399 board

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To convert saradc value to voltage, we have the following formula:

voltage = (raw saradc value * saradc voltage ref voltage) / 1024

Take RK3399 excavator as an example, the saradc voltage reg voltage is 1800000uv,
the formula can simplify to :

voltage = raw saradc value * 1750 uv

Change-Id: I8703bcdc2e2b0305118dd9f5777533e8fac7c5a1
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue 2019-06-26 13:28:41 +08:00 • committed by Tao Huang
commit 52dffbede7
2 changed files with 41 additions and 23 deletions
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63
arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
View file

@ -43,6 +43,7 @@
#include <dt-bindings/display/drm_mipi_dsi.h>
#include <dt-bindings/display/media-bus-format.h>
#include "rk3399-vop-clk-set.dtsi"
#include <dt-bindings/input/input.h>
/ {
compatible = "rockchip,android", "rockchip,rk3399";
@ -104,53 +105,63 @@
};
};
rk_key: rockchip-key {
compatible = "rockchip,key";
status = "okay";
adc-keys {
compatible = "adc-keys";
io-channels = <&saradc 1>;
io-channel-names = "buttons";
keyup-threshold-microvolt = <1800000>;
poll-interval = <100>;
vol-up-key {
linux,code = <115>;
label = "volume up";
rockchip,adc_value = <1>;
linux,code = <KEY_VOLUMEUP>;
press-threshold-microvolt = <1750>;
};
vol-down-key {
linux,code = <114>;
label = "volume down";
rockchip,adc_value = <170>;
};
power-key {
gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
linux,code = <116>;
label = "power";
gpio-key,wakeup;
linux,code = <KEY_VOLUMEDOWN>;
press-threshold-microvolt = <297500>;
};
menu-key {
linux,code = <59>;
label = "menu";
rockchip,adc_value = <746>;
linux,code = <KEY_MENU>;
press-threshold-microvolt = <1305500>;
};
home-key {
linux,code = <102>;
label = "home";
rockchip,adc_value = <355>;
linux,code = <KEY_HOME>;
press-threshold-microvolt = <621250>;
};
back-key {
linux,code = <158>;
label = "back";
rockchip,adc_value = <560>;
linux,code = <KEY_BACK>;
press-threshold-microvolt = <980000>;
};
camera-key {
linux,code = <212>;
label = "camera";
rockchip,adc_value = <450>;
linux,code = <KEY_CAMERA>;
press-threshold-microvolt = <787500>;
};
};
gpio-keys {
compatible = "gpio-keys";
autorepeat;
pinctrl-names = "default";
pinctrl-0 = <&pwrbtn>;
power {
debounce-interval = <100>;
gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
label = "GPIO Key Power";
linux,code = <KEY_POWER>;
wakeup-source;
};
};
@ -425,5 +436,11 @@
<1 3 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
buttons {
pwrbtn: pwrbtn {
rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_up>;
};
};
};

1
arch/arm64/boot/dts/rockchip/rk3399-evb.dtsi
View file

@ -529,6 +529,7 @@
&saradc {
status = "okay";
vref-supply = <&vcc_1v8>;
};
&pinctrl {